/* Visitor introduction only; scientific note typography stays in build_site.py. */
.landing{--bg:#f7f5ef;--fg:#243b36;--muted:#5e6b62;--rule:#dcded2;--accent:#205b4e;--card:#fffefa;background:var(--bg);color:var(--fg);font-family:Georgia,"Iowan Old Style",serif}
.landing .wrap{max-width:1160px;padding:0 32px}
.landing header.site{margin:0;padding:24px 0;border-color:var(--rule)}
.landing header.site .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px}
.landing header.site a.home{font:600 18px/1.3 system-ui,sans-serif;letter-spacing:-.6px}
.landing header.site a.home span{color:#ad4a2b;margin-left:5px}
.landing nav.site{display:flex;gap:24px;margin:0;font:13px/1.5 system-ui,sans-serif}
.landing nav.site a{margin:0;color:#455b51}
.landing a{text-underline-offset:4px}
.landing a:focus-visible,.landing button:focus-visible,.landing input:focus-visible{outline:3px solid #a34425;outline-offset:5px}
.skip-link{position:absolute;left:16px;top:-80px;z-index:10;background:#fff;padding:10px 16px}
.skip-link:focus{top:8px}
.landing .intro{padding:64px 0 36px}
.landing .eyebrow{font:600 11px/1.5 system-ui,sans-serif;letter-spacing:1.7px;text-transform:uppercase;color:#657266;margin:0 0 18px}
.landing h1{font-weight:400;font-size:clamp(40px,5.4vw,68px);line-height:1.06;letter-spacing:-2.1px;margin:0 0 24px}
.landing h1 em{font-weight:400;color:#346959}
.landing .intro-copy{font-size:19px;line-height:1.6;max-width:690px;margin:0 0 24px;color:#536058}
.intro-links{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.landing .button{display:inline-flex;gap:24px;align-items:center;padding:12px 18px;border-radius:4px;text-decoration:none;font:500 13px/1.5 system-ui,sans-serif}
.landing .button.primary{background:#234f42;color:#fffefa;border:1px solid #234f42}
.landing .button.primary:hover{background:#153d31}
.landing .text-link{font:500 13px/1.5 system-ui,sans-serif}
.landing .text-link span{margin-left:8px}
.refinement{border:1px solid #d4d9cb;border-radius:8px;background:#fffdf7;overflow:hidden;box-shadow:0 12px 32px #273e3210}
.diagram-grid{display:grid;grid-template-columns:1fr 1fr}
.diagram-grid figure{margin:0;min-width:0;padding:23px 18px 16px}
.motion-panel{border-right:1px solid #e1e2d7;background:linear-gradient(140deg,#fffaf1,#fffdf7)}
.field-panel{background:linear-gradient(140deg,#f7faf1,#f1f5eb)}
.diagram-grid figcaption{display:flex;align-items:center;gap:10px;font:500 14px/1.5 system-ui,sans-serif;padding:0 6px}
.graph-title{font-size:18px;font-weight:600;letter-spacing:-.35px}
.motion-panel .graph-title{color:#963f24}.field-panel .graph-title{color:#1c6353}
.figure-number{font:italic 18px Georgia,serif;color:#a34425}
.field-panel .figure-number{color:#18675e}
.figure-tag{margin-left:auto;font-size:9px;font-weight:600;letter-spacing:1.2px;color:#6d776c}
.refinement-svg{width:100%;height:auto;display:block;margin:8px 0 0}
.svg-label{font:13px system-ui,sans-serif;fill:#5c655d}
.svg-annotation{font:13px Georgia,serif}
.warm{fill:#a34425}.cool{fill:#24675b}
.reference-curve{fill:none;stroke:#8a998c;stroke-width:3;stroke-linecap:round}
.motion-defect{fill:#b7533130;stroke:none}
.motion-steps{fill:none;stroke:#b75331;stroke-width:2.5;stroke-linejoin:round}
.motion-marks{fill:#b75331;stroke:#fffaf1;stroke-width:1.4}
.field-grid{fill:none;stroke:#4f8b77;stroke-width:1;opacity:.7}
.field-cell{fill:#43887544;stroke:#1d6556;stroke-width:2}
.diagram-caption{display:flex;align-items:center;gap:7px;padding:0 12px;margin:4px 0 0;font:11px/1.5 system-ui,sans-serif;color:#626c60}
.legend-line{display:inline-block;width:18px;height:2px}
.warm-line{background:#b75331}.curve-line{background:#8a998c;margin-left:14px}
.legend-square{width:10px;height:10px;display:inline-block;border:1px solid #1d6556;background:#43887544}
.caption-note{margin-left:auto}
.refinement-controls{display:grid;grid-template-columns:1.25fr 1.1fr auto auto;align-items:center;gap:22px;padding:20px 25px;background:#f0f2e8;border-top:1px solid #dce0d1;font:12px/1.5 system-ui,sans-serif}
.refinement-controls label{display:block;font-size:13px;font-weight:600}
#slider-help{display:block;font-size:11px;color:#59675a;margin-top:3px}
.slider-wrap{display:flex;gap:10px;align-items:center;color:#59675a;font-size:10px}
.slider-wrap input{accent-color:#28624f;width:100%;min-width:70px;cursor:pointer;height:30px;margin:0}
#division-count{font-variant-numeric:tabular-nums;min-width:76px}
#refine-step{background:transparent;border:1px solid #b7c1ab;border-radius:4px;color:#284e3e;padding:9px 11px;cursor:pointer;font:500 11px/1.5 system-ui,sans-serif;min-width:116px}
#refine-step:hover{background:#e0e7d6}
#refine-step span{margin-left:12px}
[hidden]{display:none!important}
.landing .figure-footnote{max-width:680px;color:#687263;font:11px/1.6 system-ui,sans-serif;margin:13px 0 0}
.static-caption{padding:14px 25px;font:12px/1.6 system-ui,sans-serif}
.questions{padding-top:72px;scroll-margin-top:24px}
.landing h2{font-size:32px;font-weight:400;line-height:1.2;letter-spacing:-.7px;margin:0}
.section-heading{margin-bottom:28px}
.section-heading .eyebrow,.method .eyebrow,.reading .eyebrow{margin-bottom:12px}
.question-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.question-card{padding:28px;border:1px solid var(--rule);border-top:3px solid #b75331;border-radius:5px;background:#fffdf8;display:flex;flex-direction:column;min-width:0}
.question-card.gauge{border-top-color:#2d7562}
.landing .card-kicker{display:flex;justify-content:space-between;gap:12px;align-items:center;font:600 9px/1.5 system-ui,sans-serif;letter-spacing:.6px;margin:0 0 21px;color:#a34425}
.gauge .card-kicker{color:#24675b}
.status{white-space:nowrap;font-size:9px;letter-spacing:0;font-weight:500;background:#f0f1e7;border:1px solid #d9ddcd;border-radius:20px;padding:3px 8px;color:#53604f}
.landing .question-card h3{font-size:27px;line-height:1.2;font-weight:400;letter-spacing:-.5px;margin:0 0 16px}
.question-card>p:not(.card-kicker){font-size:15px;line-height:1.65;color:#5b655c;margin:0}
.action-illustration{display:flex;align-items:center;justify-content:center;gap:14px;height:112px;color:#a34425;font:italic 17px Georgia,serif}
.action-illustration span{padding:8px 10px;border-bottom:1px solid #d7b6a3}
.action-illustration b{font-weight:400;font-style:normal;color:#8a7768}
.action-illustration strong{font-weight:400}
.gap-illustration{display:block;width:100%;height:112px;padding:5px 0}
.progress-pair{font:12px/1.6 system-ui,sans-serif;border-top:1px solid var(--rule);padding-top:17px;margin:0 0 23px}
.progress-pair>div{display:grid;grid-template-columns:88px 1fr;gap:12px;margin:0 0 11px}
.progress-pair dt{font-weight:600;color:#3d5346}
.progress-pair dd{margin:0;color:#616b5e}
.card-link{font:500 13px/1.5 system-ui,sans-serif;display:flex;justify-content:space-between;margin-top:auto}
.newton .card-link{color:#a34425}
.method{padding:68px 0 58px}
.method-steps{list-style:none;padding:0;margin:30px 0 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:38px}
.method-steps li{position:relative;padding-top:7px}
.step-symbol{display:inline-grid;place-items:center;width:40px;height:40px;border:1px solid #ccd6c2;border-radius:50%;color:#32674f;font:24px/1 Georgia,serif;background:#edf0e5}
.landing .method-steps h3{font:600 14px/1.4 system-ui,sans-serif;margin:17px 0 8px}
.method-steps p{font:14px/1.65 Georgia,serif;color:#616c60;margin:0;max-width:270px}
.reading{border-top:1px solid var(--rule);padding:44px 0 62px;display:grid;grid-template-columns:1fr 1fr;gap:64px}
.reading h2{font-size:30px;max-width:360px}
.reading p:not(.eyebrow){color:#616c60;font:15px/1.65 Georgia,serif;max-width:390px}
.reading-links a{display:flex;align-items:center;justify-content:space-between;text-decoration:none;border-bottom:1px solid var(--rule);padding:14px 0;font:16px/1.5 Georgia,serif}
.reading-links a:first-child{padding-top:0}
.reading-links a:hover{color:#a34425}
.reading-links small{display:block;font:9px/1.5 system-ui,sans-serif;letter-spacing:1px;color:#6b7865;margin-bottom:5px}
.landing footer.site{background:#eaf0e3;border-top:1px solid #d8e0cc;margin:0;padding:23px 0;font:11px/1.6 system-ui,sans-serif;color:#53624e}
.landing footer.site .wrap{display:flex;gap:32px;justify-content:space-between}
.landing footer.site p{margin:0;max-width:560px}
@media(max-width:900px){.refinement-controls{grid-template-columns:1fr 1fr;gap:12px 24px}.refinement-controls output{grid-column:1;grid-row:2}.refinement-controls button{justify-self:end}.diagram-grid figure{padding:18px 10px 14px}.question-card{padding:23px}.landing .card-kicker{flex-wrap:wrap}.reading{gap:32px}}
@media(max-width:620px){.landing .wrap{padding:0 20px}.landing header.site{padding:19px 0}.landing header.site .wrap{gap:12px}.landing header.site a.home{font-size:16px}.landing nav.site{font-size:11px;gap:14px}.landing .intro{padding:40px 0 28px}.landing h1{font-size:43px;letter-spacing:-1.5px}.landing .intro-copy{font-size:17px}.intro-links{gap:18px}.landing .text-link{font-size:12px}.diagram-grid{grid-template-columns:1fr}.motion-panel{border-right:0;border-bottom:1px solid #dce0d1}.diagram-grid figure{padding:18px 14px 14px}.refinement-svg{max-height:250px}.diagram-grid figcaption{font-size:13px}.refinement-controls{padding:18px;gap:10px 15px;grid-template-columns:1fr auto}.refinement-controls>div:first-child{grid-column:1/-1}.slider-wrap{grid-column:1/-1}.refinement-controls output{grid-row:3}.refinement-controls button{grid-row:3}.questions{padding-top:48px}.landing h2{font-size:28px}.question-grid{grid-template-columns:1fr;gap:18px}.question-card{padding:24px}.landing .question-card h3{font-size:27px}.landing .card-kicker{font-size:8px;gap:8px}.method{padding:48px 0}.method-steps{grid-template-columns:1fr;gap:25px}.method-steps li{padding-left:58px}.step-symbol{position:absolute;left:0;top:8px}.landing .method-steps h3{margin-top:0}.method-steps p{max-width:none}.reading{grid-template-columns:1fr;padding:35px 0 42px;gap:24px}.reading h2{max-width:none}.landing footer.site .wrap{flex-direction:column;gap:12px}}